Durable, warm and ready to work, the Iron-Tuff Polar jacket has got your back, even in -50°F conditions. Work in confidence, comfort and warmth in any frigid environment. The abrasion-resistant, water-resistant, wind-tight 400-denier nylon outer shell of this freezer jacket is strong and durable. With 11.25 oz. RefrigiFill™ polyester insulation and bound seams to seal out the wind, you can face whatever the day holds.